Greetings,I don't know if this helps or not, but my wife and I both love Wever's work, and we have some reproductions printed as cards. They originate from Holland (Arnhem, if my memory serves me aright) where there is an art dealer who specialises in this stuff. When I last spoke to him a couple of years ago, he had some originals to sell. The cards carry the imprint on the rear of Art Revisited, and a telephone number (00)31 504 032 375.
Best of luck.
W